another open forum

Is nature vs. nature exactly just that- exactly proportionate? Is the theory that genetics and environment play against each other to form our respective selves in an exact equation that exists in every human on the same level true, or is that even it? Are some children less likely to be susceptible to replicating the violence they were privy to at young ages than, say, a child with genetic characteristics of an antisocial that was brought up in a good home and never exposed to traumatic violence? How do we put a formulae on genetic behavioral theory?